When did momondo last update prices for flights from Helena Airport to London?

Prices for flights from Helena Airport to London were last updated today.

How old do you have to be to fly from Helena Airport to London?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$334 Cheap Flights from Helena to London in 2026

Find the cheapest flights from Helena to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:30 pm - 8:30 am

HLN

LHR

35h 00m

2 stops

6:35 am - 8:59 pm

LHR

HLN

21h 24m

2 stops

$838United Airlines

Sun, Dec 6 - Wed, Dec 9

2:30 pm - 9:40 am

HLN

LHR

12h 10m

1 stop

6:35 am - 8:59 pm

LHR

HLN

21h 24m

2 stops

$874United Airlines

Sun, Dec 6 - Wed, Dec 9

2:30 pm - 9:40 am

HLN

LHR

12h 10m

1 stop

11:35 am - 8:59 pm

LHR

HLN

16h 24m

1 stop

$902United Airlines

Sun, Dec 6 - Wed, Dec 9

2:35 pm - 9:40 am

HLN

LHR

12h 05m

1 stop

9:30 am - 9:18 pm

LHR

HLN

42h 48m

2 stops

$941United Airlines

Tue, Sep 15 - Tue, Sep 29

2:35 pm - 9:25 pm

HLN

LHR

23h 50m

2 stops

2:05 pm - 9:18 pm

LHR

HLN

38h 13m

2 stops

$946United Airlines

Tue, Sep 15 - Tue, Sep 29

6:15 am - 9:40 am

HLN

LHR

20h 25m

1 stop

11:25 am - 9:18 pm

LHR

HLN

16h 53m

1 stop

$962United Airlines

Tue, Sep 15 - Tue, Sep 29

6:15 am - 9:40 am

HLN

LHR

20h 25m

1 stop

11:25 am - 9:30 pm

LHR

HLN

17h 05m

1 stop

$1,071United Airlines

Sun, Aug 9 - Sun, Aug 16

2:20 pm - 12:35 pm

HLN

LHR

15h 15m

1 stop

10:00 am - 9:30 pm

LHR

HLN

18h 30m

2 stops

$1,076United Airlines

Sun, Aug 9 - Sun, Aug 16

2:20 pm - 2:40 pm

HLN

LHR

17h 20m

2 stops

10:00 am - 9:30 pm

LHR

HLN

18h 30m

2 stops

$1,094United Airlines

Sun, Aug 9 - Sun, Aug 16

2:20 pm - 12:35 pm

HLN

LHR

15h 15m

1 stop

6:55 am - 9:20 pm

LHR

HLN

21h 25m

2 stops

$2,740Lufthansa

Wed, Jul 8 - Wed, Jul 29

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United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

United Airlines

Dec 6

HLN2:30 pmHelena

35h 00m

2 stops

LHR8:30 amLondon Heathrow

Dec 9

LHR6:35 amLondon Heathrow

21h 24m

2 stops

HLN8:59 pmHelena

$838

United Airlines

Dec 6

HLN2:30 pmHelena

12h 10m

1 stop

LHR9:40 amLondon Heathrow

Dec 9

LHR6:35 amLondon Heathrow

21h 24m

2 stops

HLN8:59 pmHelena

$874

United Airlines

Dec 6

HLN2:30 pmHelena

12h 10m

1 stop

LHR9:40 amLondon Heathrow

Dec 9

LHR11:35 amLondon Heathrow

16h 24m

1 stop

HLN8:59 pmHelena

$902

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 12/6

2:30 pm-8:30 am

2 stops35h 00m

London Heathrow

Wed 12/9

6:35 am-8:59 pm

2 stops21h 24m

$838

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 12/6

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

Wed 12/9

6:35 am-8:59 pm

2 stops21h 24m

$874

Quickest round-trip

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 12/6

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

Wed 12/9

11:35 am-8:59 pm

1 stop16h 24m

$902

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 9/15

2:35 pm-9:40 am

1 stop12h 05m

London Heathrow

Tue 9/29

9:30 am-9:18 pm

2 stops42h 48m

$941

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 9/15

2:35 pm-9:25 pm

2 stops23h 50m

London Heathrow

Tue 9/29

2:05 pm-9:18 pm

2 stops38h 13m

$946

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 9/15

6:15 am-9:40 am

1 stop20h 25m

London Heathrow

Tue 9/29

11:25 am-9:18 pm

1 stop16h 53m

$962

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 8/9

6:15 am-9:40 am

1 stop20h 25m

London Heathrow

Sun 8/16

11:25 am-9:30 pm

1 stop17h 05m

$1,071

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 8/9

2:20 pm-12:35 pm

1 stop15h 15m

London Heathrow

Sun 8/16

10:00 am-9:30 pm

2 stops18h 30m

$1,076

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 8/9

2:20 pm-2:40 pm

2 stops17h 20m

London Heathrow

Sun 8/16

10:00 am-9:30 pm

2 stops18h 30m

$1,094

HelenaLondon

HLN - LHR

HLNLHR

Helena

Wed 7/8

2:20 pm-12:35 pm

1 stop15h 15m

London Heathrow

Wed 7/29

6:55 am-9:20 pm

2 stops21h 25m

$2,740

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

How to get the cheapest flight ticket from Helena to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Helena to London?

United Airlines and Delta are the most popular carriers operating from Helena to London

When to book flights from Helena to London

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Helena to London (HLN to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to London

Fastest flight time	12h 05m
Direct flights	None

The fastest flight from Helena to London takes 12h 05m

There are no direct flights from Helena to London. There are no popular flight routes from Helena to London.

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Frequently asked questions about flying from Helena to London

How far is Helena to London by plane?
Helena and London are 4547.6 mi apart from one another. In terms of flight time, this usually takes a little over 12h 05m.
When did momondo last update prices for flights from Helena Airport to London?
Prices for flights from Helena Airport to London were last updated today.
How old do you have to be to fly from Helena Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Hounslow

Gatwick

Milton Keynes

Luton

Hayes

Dover

Crawley

Croydon

Wembley

Stansted

Harrow

Slough

Watford

Cobham

Brentwood

Guildford

Ilford

Folkestone

Uxbridge

Romford

Why use momondo?

Why should I use momondo to find a flight deal from Helena to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Helena to London. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Helena to London with flexible booking policies on momondo?

Yes. All flights to London from Helena on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Helena to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Helena to London.

I’m not ready to book a flight from Helena to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Helena and alert you when they change.

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Cheap flights from Helena to London from $334

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to London departing on 11/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Helena to London

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How to get the cheapest flight ticket from Helena to London

What is the cheapest airline that flies from Helena to London?

When to book flights from Helena to London

Cheap Helena to London (HLN to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to London

Fastest flight time

Direct flights

Frequently asked questions about flying from Helena to London

Traveling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Helena

According to popular flight searches on momondo this year

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Explore popular destinations other users love

According to popular flight searches on momondo this year